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RDST Capital LLC

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13F filer, CIK 1912187, SEATTLE, WA

RDST Capital LLC reported $1,061,961,389 across 19 holdings for the quarter ended 2025-09-30, in a 13F-HR/A filed 2025-11-18. Its ten largest share positions make up 65.79% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR/A 0001420506-25-003460

Period
2025-09-30
Reported value
$1.06B
Holdings
19
Top 10 weight
65.79%
New
2
Sold out
1

Largest buys vs the previous quarter

SecurityShares changeApprox. value
UNPnew+336,645$79.6M
HUBSnew+121,505$56.8M
MRVLadded+391,310$32.9M
MKTXadded+172,542$30.1M
OWLadded+1,109,735$18.8M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
QSRexited-968,064-$64.2M
CSXreduced-1,371,060-$48.7M
DASHreduced-120,980-$32.9M
AMATreduced-123,513-$25.3M
ENTGreduced-145,895-$13.5M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q3 2025

Share positions as resolved from 13F-HR/A 0001420506-25-003460, largest first. % of portfolio is the value over $1,061,961,389, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
ENTGENTEGRIS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 532,115 shares; 2025Q1: 774,420 shares; 2025Q2: 1,102,675 shares; 2025Q3: 956,780 shares 956,780$88.5M8.33%-145,895Timeline
UNPUNION PAC CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 336,645 shares 336,645$79.6M7.49%newTimeline
OWLBLUE OWL CAPITAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 2,085,955 shares; 2024Q4: 1,728,545 shares; 2025Q1: 1,964,350 shares; 2025Q2: 3,381,080 shares; 2025Q3: 4,490,815 shares 4,490,815$76M7.16%+1,109,735Timeline
MSFTMICROSOFT CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 100,725 shares; 2024Q4: 167,220 shares; 2025Q1: 203,845 shares; 2025Q2: 158,240 shares; 2025Q3: 140,355 shares 140,355$72.7M6.85%-17,885Timeline
MLMMARTIN MARIETTA MATLS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 105,540 shares; 2025Q3: 111,575 shares 111,575$70.3M6.62%+6,035Timeline
MRVLMARVELL TECHNOLOGY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 424,650 shares; 2024Q4: 427,380 shares; 2025Q1: 496,505 shares; 2025Q2: 434,175 shares; 2025Q3: 825,485 shares 825,485$69.4M6.53%+391,310Timeline
DDOGDATADOG INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 327,450 shares; 2025Q2: 466,665 shares; 2025Q3: 475,095 shares 475,095$67.7M6.37%+8,430Timeline
AMZNAMAZON COM INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 117,420 shares; 2024Q4: 188,930 shares; 2025Q1: 246,140 shares; 2025Q2: 312,080 shares; 2025Q3: 281,775 shares 281,775$61.9M5.83%-30,305Timeline
HUBSHUBSPOT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 121,505 shares 121,505$56.8M5.35%newTimeline
FNDFLOOR & DECOR HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 669,870 shares; 2025Q3: 756,750 shares 756,750$55.8M5.25%+86,880Timeline
CSXCSX CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 778,870 shares; 2024Q4: 1,808,030 shares; 2025Q1: 2,279,545 shares; 2025Q2: 2,888,885 shares; 2025Q3: 1,517,825 shares 1,517,825$53.9M5.08%-1,371,060Timeline
AMATAPPLIED MATLS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 178,390 shares; 2025Q1: 329,650 shares; 2025Q2: 384,660 shares; 2025Q3: 261,147 shares 261,147$53.5M5.03%-123,513Timeline
MKTXMARKETAXESS HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 34,225 shares; 2025Q2: 109,005 shares; 2025Q3: 281,547 shares 281,547$49.1M4.62%+172,542Timeline
DCODUCOMMUN INC DELQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 540,290 shares; 2024Q4: 557,259 shares; 2025Q1: 628,803 shares; 2025Q2: 568,791 shares; 2025Q3: 501,496 shares 501,496$48.2M4.54%-67,295Timeline
WDAYWORKDAY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 123,365 shares; 2024Q4: 182,970 shares; 2025Q1: 232,535 shares; 2025Q2: 244,090 shares; 2025Q3: 199,545 shares 199,545$48M4.52%-44,545Timeline
CVNACARVANA COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 222,940 shares; 2025Q2: 136,885 shares; 2025Q3: 107,205 shares 107,205$40.4M3.81%-29,680Timeline
METAMETA PLATFORMS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: 36,355 shares; 2025Q3: 50,955 shares 50,955$37.4M3.52%+14,600Timeline
APOAPOLLO GLOBAL MGMT INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 285,860 shares; 2024Q4: 233,495 shares; 2025Q1: 117,255 shares; 2025Q2: 147,990 shares; 2025Q3: 147,055 shares 147,055$19.6M1.85%-935Timeline
DASHDOORDASH INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 176,760 shares; 2024Q4: 206,450 shares; 2025Q1: 170,395 shares; 2025Q2: 169,550 shares; 2025Q3: 48,570 shares 48,570$13.2M1.24%-120,980Timeline

Sold out in Q3 2025

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
QSRRESTAURANT BRANDS INTL INC968,064$64.2Mshares

How Q3 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001420506-25-003205 superseded2025-11-13acceptance time not in the bulk data set
13F-HR/A 0001420506-25-003460 baserestatement2025-11-18acceptance time not in the bulk data set